Nut-lock.



NNNNNNN K. APPLICATION FILED DECL15, 1910.

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LINDEY WILDMAN, .onntnwoon CITY, -rnNNsYLvnl-mui, Assrofnon or' onnfroun'rn To l WILLIAM E. RENNEB., orA ELLwoon CITY, rENNsYLvANIA. k-

v NUT-LOCK.

I' Specication'of Letters Patent. Patllted NOV. 28, 191,1.;

Application led December 15, 1910. Serial No. 597,392.'

scription of the invention, such'as will. en-

able-others skilled inthe 4art to which it appertains to'make and use the same.

'This invention relates to improvements in nut locks. -j

Oneobject of the invention is to provide a simpleA and inexpensive construction of nut lock comprising a locking pin adapted to be driven through a suitable passage in the nut and into engagement with the Y threads of the bolt thereby effectually fastening the nut against rotation on the bolt. Another object is to pro-vide a nut lock of this character which may be readily removed when desired to permit the unscrewing of the nut.

In the accompanying drawings, Figure l isan end View of a bolt and nutshowing 'the application of my invention thereto.

Fig. 2 is a central longitudinal section thereof. Fig. 3 is an end view of a bolt and nutshowing a modified construction of the invention. Fig. 4 is a central longitudinal section lof the form 'shown in Fig. 3. Fig. 5 is a detail perspective view of the locking pin shown in Figs. 1A and 2 of the drawing. Fig. 6;.is a similar view of the locking pin shown in Figs. 3 and 4 of the drawing.

Referring more particularly to the drawings l denotes a bolt and 2 denotes the nut which is screwed on the `-bolt and which 'is provided with my improved locking device whereby the same is held against casual removal fromthe bolt. j

My improvedlocking device comprises a tapered pin which may be of circular form in cross section as shown at 3 in Figs. l, 2 and 5 of the drawings or which may be of rectangular form in cross section as shown at 4 injFigs. 3,4 and 6 of the drawings forming the cutting edges for the purposes hereinafter described.

In the form of the invention employing the tapered pin 3 the nut'2 is provided with a tapered substantially circular passage 5 which is formed therethrough adjacent t0 its inner side and which intersects `or cuts through a portioinof one side of the thread.

of the nut, as clearly shown in Figs. l and 2 of the drawings. After the nuthas been screwed up on the bolt and into engagement with the object to be fastened thereby, the pi'n 3 is driven through the passage 5 and when thus driven will firmly engage or embed itself into the threads of the bolt and into the object `thereby rigidly securing the nut in position on the bolt. After being thus driven through themut the taperedend of the pin is bent at an angle in any direc# tion against the adjacent side ofthe nut thereby positively preventing the loosening or removal ofthe pin.

In the form of the invention shown in Figs.4 3, 4 and 6 of th'e drawings the nut' is shown as having fo-rmed'inits inner side a transverse V-Shaped notch or groove 6 which intersects or cuts into the threads of the nut as shown. Through the V-shaped notch or groove 6' is adapted to be driven the rectangular, tapered pin 4, said pin when thus driven, 'fitting into and firmly engaging the threads of t-he bolt and having its outer corner binding against the adjacent surface of the object to which the vbolt and nut are applied. In this form of the invention the projecting smaller end of thepin is also bent at an angle against the adjacent side of the nut thereby securely holding t-he pin in place.

` While I have herein sho-wn and described two forms of locking pins it is obvious that lI may employ other forms of pins and variously shaped. passages in the nuts to re ceive thesame. The locking pin whenthus driven through t-he nut and into engage ment with the threads of the bolt will securely fasten the nut against casual removalV or loosening, and will permit the vnut to be 'readily removed by straightening the end of the key and driving the same back through the passage in the nut,

From the foregoing descriptiontaken in connection with the accompanying drawings, the construction and operation of the invention will be readily understood without requirin a more extended explanation.

Various c anges in t-he form, proportion and minor det-ails of construction may be resorted to without departing from the principle or sacrificing any of the advantages yof this invention as 'deined in the appended claim.

What is daim-ed sv:

In anut lock, a nut 'having fomed there-- ugpin. having cuttngedgesand corrie-' gagement'wth the .threads of theboed object to be secured, the projecting' e116. of

10 saidpm being adapted to bea-bent at an angle against vthe adjacent side of the nut, thereby preveutngthe casual loosening or removal ofthe pin.

in testimony whereof I have heremuto'set my ,handl in. .presence of two Subscribing 15 l LIN LEY WILDMAN. Witnesses? v R.' E. Bumm., RENNEIL l Witnesses. 

